Wire wrapping method



Sept. 2, 1941. THIEL 2,25 ,762.

WIRE WRAPPING METHOD Filed I Aug. 23, 1940 N INVENTOR.

Ofio TZIG/ ATTORNEY.

Patented Sept. 2, 1941 UNITED STATES PATENT FlCE WIRE WRAPPING METHOD Otto Thiel, Detroit, Mich.

Application August 23, 1940, Serial No. 355,182

2 Claims.

This application relates to apparatus and method for wrapping a ribbon of paper or the like around a wire, in overlapping turns.

There have been known machines which wrap ribbon on an advancing wire, with the wire being coated with adhesive. Such machines, however, were so constructed that the overlapping turns of paper ribbon adhered only to the wire, and not to one another. Wire wrapped in this manner did not prove satisfactory for certain specific purposes, because the paper would tend to unravel from the wire. Consequently, attempts were made to provide apparatus and method whereby both surfaces of the paper ribbon were coated with adhesive. Inone known attempt, the machine was so constructed that both surfaces of the paper ribbon were coated with adhesive, before it was fed to the wire. For many reasons, this did not prove satisfactory.

An object of the invention, therefore, is to provide an apparatus and method such that successive turns of the ribbon will adhere, not only to the wire, but also to already wrapped turns of the paper ribbon.

In the apparatus and method herein disclosed, the paper ribbon is not coated with adhesive before it is fed to the wire. Instead, the whole of one surface of the paper ribbon is caused to scrape along the adhesively coated advancing wire and that surface of the paper ribbon thus becomes coated with adhesive. The paper ribbon is so directed that during the wrapping operation, that surface of the paper ribbon is wrapped partially around the wire and partially around the dry surface of a paper turn already wrapped on the wire and consequently the paper turns will adhere to one another, as Well as to the wire. Thus the object so long desired is attained simply and conveniently.

The apparatus of my invention is illustrated diagrammatically in the accompanying drawing, Referring to this drawing, it will be seen that the machine there disclosed comprises a rotary head ill, through and along the axis of which advances a non-rotating wire I I. Carried by the head and projecting forwardly from it in such a way that it is parallel to but spaced from the path of advance of the wire, is a guide rod I2.

A ribbon spool I4 is loosely mounted on a spindle I5 which is also carried by the head in any suitable manner. A second guide element [6, is indicated, and this also is supported by the head [0.

It is understood that before the wire ll leaves the head It it is well coated suitable character.

As the ribbon of paper or the like, referenced l'l, leaves the spool I4, it is guided by the guide element [6 so that the upper surface a thereof scrapes along the advancing wire H at the point a: on its way to the guide rod [2, which then directs the paper so that part of that surface a of the ribbon engages the wire at the point 1/ to be wrapped around it, and part engages the dry surface I; of an already wrapped turn of paper, to be wrapped around the paper in an overlapping spiral.

In the machine indicated, all of the parts shown are carried by the rotary head It, so as to rotate with it around the advancing wire I l which does not rotate. Thus the wrapping operation is completed.

By virtue of the engagement of the whole of surface a of the paper ribbon I1, with the adhesively coated wire at point at, before the surface a of the ribbon is wrapped around wire and paper, a paper to paper adhesion is obtained, even though both surfaces of the paper ribbon are dry as they leave the spool It.

Now having described the apparatus and method herein disclosed, reference should be had to the claims which follow for a determination of the invention.

I claim:

1. In the art of helically wrapping an adhesively coated advancing wire or the like with overlapping turns of a ribbon of paper or the like, that step which consists in so directing the ribbon that the whole of one surface thereof scrapes along the advancing wire at a point prior to the point where the ribbon is wrapped in overlapping turns around the wire, with its adhesively coated surface then engaging the Wire and the dry surface of an already wrapped turn of paper.

2. In the art of helically wrapping an adhesively coated advancing wire or the like with overlapping turns of a ribbon of paper or the like, that step which consists in so directing the ribbon that at least part of One surface thereof scrapes along the advancing wire at a point prior to the point Where the ribbon is wrapped in overlapping turns around the wire, with one part of the aforementioned surface then engaging the wire, and with the aforementioned adhesively coated part of that ribbon surface overlapping the dry surface of the already wrapped turn of the ribbon.

with adhesive of any OTTO THIEL. 

